Hi David, In Tekla BIMsight you can use saved views for storing information for later use. In addition to object colors, saved views store also visibility settings, clip planes, markings and measurements. Then after re-opening the project, you can view previously applied custom colors by double-clicking the thumbnail of the saved view. See more information here about the saved views http://www.teklabimsight.com/helpcenter/helpTopic.jsp?topic=bim_saving_view Thanks, Heikki